Ceiling construction



' Dec. 16, 1930.

Eigif A. SCHMID CEILING CONSTRUCTION Filed Aug. 2, 1927 Patented Dec. 16, 1930' A UNET'ED srA'ras ALFRED SCHMID, o

F vrnivmi, AUSTRIA CEILING CONSTRUCTION Application. filed August 2, 1927, Serial No The conditions which are to be taken into consideration when constructing or erecting a ceiling are to prevent the occurrence shocks and sound-transmission, and further. to provide a protection against the heat and cold and principally against fire.

In the known constructions these conditions are satisfied by providing between the carrying or supporting members of the ceil- 1o ing an extensive filling, which consists of brickwork rubbish or coal-pieces or the like. In this filling are embedded the bolsters or bearers of the floor and the latter is placed on top of the said bolsters or bearers. In consequence of this embedding just at the place where the transmission of the pressures, shocks and sound takes place, the height of the filling is reduced, so that, in view of the embedding of the bolsters or bearers along their whole area, the height of the whole filling has to be increased as well as at those places where the filling could be dispensed with, whereby the load and the building costs of the ceiling-are increased considerably.

One object of the construction according to the present invention consists in removing the drawbacks and fulfilling the requirements above mentioned, and at the same time accomplishing the advantage that the weight of the structure and the costs of manufacture are reduced considerably in comparison with the known construction.

Another object of the invention is to provide a ceiling construction wherein the arrangements for taking up and destroying the effects of the shocks and sound are distinctly separated from one another, whereby however the isolation against heat and fire is fully satisfied.

Another object of the present invention is to dispense with any unnecessary part of the heavy filling. The object is satisfied by employing a suitably shaped. girder of steel, concrete or the like, which receives or contains the filling for carrying the bolsters, as well as the latter themselves, so that any further filling between these girders is dispensed with. The reduction of the weight obtained thereby and the smaller building height 210,139, and in Austria February 15, 1927.

which is necessary is obvious, and in spite of. this, the transmission of shocks and sounds is decreased considerably.

In order to provide a protection against fire and heat the suitably shaped girder is completely covered in or lined and the spaces remaining between the 'girdersare covered or lined with suitable fire-proof material.

Owing to this provision two insulated airlayers are formed, one being provided be.- tween the 'top' ceiling and the insulation, while the other air-layer is present between the insulation and the' bottom ceiling, the two air-layers providing an eiiective heat-insulation. a i

A. further feature of the present invention' consists in the possibility of standardiz'ing the parts, because all the individual. members, thus the girder with the covering. or insulation and further the intermediate sections for instance wooden parts provided with pipes, can beindividually manufactured. in the works or factory according to stand-v ard measurements and thereby can be inserted or fitted into the building without having to take into consideration the weather and without the danger of including water.

The advantages of this mode of construction, with respect to a fast method of building, without consideration to the season, and the reduction in the costs of erection of the building which is immediately dry and habitable, are obvious and further the building is fully protected against insects and is of such a small weight, that the walls and foundation can be constructed comparatively thin and small. I Y

Several modes of. carrying out thepresent invention are illustrated by way of example on the accompanying sheets of drawings in which p I Fig. 1 shows in sectional elevation the mode of construction in connection with small houses.

Fig. '2 illustrates in. sectional elevation steel structure for use in connection with tenements. i

Fig. 3 shows in sectional elevation an individual member built up for use in the fac tory or works and by the combination of which the ceiling is formed.

Figs. 4 and 5 illustrate in sectional elevation further constructions, and

Fig. 6 is a detail view in section.

In the construction shown in Fig. 1 steel girders are employed. The top ceiling l rests on bolsters 2, which are disposed upon the filling 5 arranged within a flanged channeled or U-shaped girder 4: along the entire length of the latter. Also'the greatest part of the bolster 2 rests within the girder 4, whereby the total height of the ceiling H and the building-height are reduced to a minimum. Thereby also an extensive airspace 3 is formed between the bottom ceiling 8 and the top ceiling 1.

In the steel-structure shown in Figs. 2 and 3 the same reference characters indicate the same or similar parts as in the construction shown in Fig. 1 with the addition that the corresponding numerals are primed. The particulary shaped girder l is enclosed in or surrounded by a fire-proof insulation 6, which is continued between the individual girders and which includes with the top ceiling an air-layer orair-cushion 3' and with the bottom ceiling 8 another air-layer or air-cushion 7, so that a double protection against sound and fire is formed.

Fig. 4 shows the construction of a strong reinforced concrete ceiling, in whichthe suitable shaped girders l are provided with extended flanges which contact with one another. In this connection the extended flanged portions of the girders 4 constitute horizontal insulating members. Also in this construction two air-compartments 3 and 7 are formed, and in spite of this a very low building-height h and total height H is safeguarded.

In the construction shown in Fig. 5, in order to render possible an easier mode of manufacture and erection, the suitable shaped reinforced concrete girders consists of two parts 4a, which also contact with one another and are suited for the reception of the filling 5 and of the bolster 2*.

One girder-half 4a is illustrated in crosssection in Fig. 6. I

I claim- 1. A ceiling construction including in combination, a plurality of transverse supporting girders, filling material arranged within and extending throughout the length of the girders, bolsters lying partly in the girders and disposed on and. supported by the filling material, spaced horizontal ceiling members supported respectively on the upper surface of the bolsters and on the undersurface of the griders, and horizontally disposed insulating members secured to and continuing from the upper portions of the girders and dividing the space between the ceiling members into two air chambers, substantially as and for the purposes set forth.

2. A ceiling construction as claimed in claim 1, wherein the girders are of U-shaped configuration in cross section and provided with flanges which substantially align with the insulating members, substantially as and for the purposes set forth.

A ceiling construction including in combination, a plurality of transverse supporting girders, filling material arranged within and extending throughout the length of the girders, bolsters lying partly within the girders and disposed on and supported by the filling material, spaced horizontal ceiling members supported respectively on the upper surface of the bolsters and on the undersurface of the girders, said girders being channel-shaped in cross section and having their upper edges terminating short of the upper ceiling member, and horizontal insulating members arranged between adjacent channel shaped girders and dividing the space between the ceiling members into two air chambers.

In testimony whereof I afiix my signature.

ALFRED SCHMID. 

